//
//  UIViewController+BackButtonHandler.h
//  掌上宏力
//
//  Created by admin on 2017/6/10.
//  Copyright © 2017年 admin. All rights reserved.
//

#import <UIKit/UIKit.h>

@protocol BackButtonHandlerProtocol <NSObject>
@optional
//重写下面的方法以拦截导航栏返回按钮点击事件
-(BOOL)navigationShouldPopOnBackButton;
@end
@interface UIViewController (BackButtonHandler)<BackButtonHandlerProtocol>

@end
